Patents Assigned to Solvay Fluor und Derivate GmbH
  • Publication number: 20100174005
    Abstract: Blowing-agent mixtures containing HFC-365mfc, HFC-227ea and one or both of 1,1,1,3,3-pentafluoropropane and 1,1,1,2-tetrafluoroethane are disclosed; as well as non-combustible polyether polyol and/or polyester polyol premixes for producing foamed products, in particular polyurethane foams.
    Type: Application
    Filed: October 5, 2009
    Publication date: July 8, 2010
    Applicant: SOLVAY FLUOR und DERIVATE GmbH
    Inventors: Lothar Zipfel, Karsten Boerner, Dierk-Ingolf Recke
  • Patent number: 7401724
    Abstract: A flux based on alkali fluoroaluminate is described which is highly suitable for dry application (“dry fluxing”). This is a flux which is free of fine-grained fraction, which is defined by a range of grain-size distribution.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: July 22, 2008
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Hans-Walter Swidersky, Alfred Ottmann, Heinz-Joachim Belt
  • Patent number: 7319175
    Abstract: Catalysts such as antimony halides, which are useful in fluorination reactions involving hydrogen fluoride, may be reduced during the reaction and require regeneration. Regenerative oxidation is usually carried out by introducing elemental halogen, preferably fluorine or chlorine, into the reaction mixture. In accordance with the invention elemental halogen is prevented from coming into contact with starting materials or intermediate products which are reactive therewith. This is preferably achieved by withdrawing part of the reaction mixture from the reactor, mixing the withdrawn part with chlorine or fluorine in order to regenerate the catalyst, and thereafter returning the withdrawn part to the reactor.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: January 15, 2008
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Carsten Brosch
  • Patent number: 7210301
    Abstract: The use of 1,1,1,3,3-pentafluorobutane (R365mfc) as refrigerant in turbocompressor cooling systems, which, due to their construction, can achieve high outputs with a small space and material requirement. Such systems used in high-performance commercial and industrial refrigeration units.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: May 1, 2007
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Peter Jannick, Christoph Meurer
  • Patent number: 7145046
    Abstract: Inorganic and organic compounds containing fluorine can be produced, for example, from corresponding chlorine-containing compounds by chlorine/fluorine exchange using fluorinating agents. Monocyclic or bicyclic compounds containing at least two nitrogen atoms, at least one of which is incorporated into the ring system, can be used as catalysts or fluorinating agents for chlorine/fluorine exchange reactions to produce sulfurylchlorofluoride, sulfurylfluoride or a carboxylic acid fluoride. It is likewise possible to carry out HF addition to unsaturated carbon-carbon bonds or chlorine/fluorine exchange at carbon atoms. For example, monochloro or dichloro malonic acid esters can be converted to difluoro malonic acid esters. Work-up of the reaction mixture can be simplified by using suitable solvents which force the reaction mixture to exist in two phases.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: December 5, 2006
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Carsten Brosch
  • Patent number: 7074975
    Abstract: Catalysts such as antimony halides, which are useful in fluorination reactions involving hydrogen fluoride, may be reduced during the reaction and require regeneration. Regenerative oxidation is usually carried out by introducing elemental halogen, preferably fluorine or chlorine, into the reaction mixture. In accordance with the invention elemental halogen is prevented from coming into contact with starting materials or intermediate products which are reactive therewith. This is preferably achieved by withdrawing part of the reaction mixture from the reactor, mixing the withdrawn part with chlorine or fluorine in order to regenerate the catalyst, and thereafter returning the withdrawn part to the reactor.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: July 11, 2006
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Carsten Brosch
  • Patent number: 7057079
    Abstract: A method of producing a halogen alkenone ether by attaching carboxylic acid halogenides or carboxylic acid anhydrides to a vinyl ether. According to the invention the method is carried out in the presence of an onium salt of a carbonic acid which can be regenerated. The resulting product is obtained in high yields. Alternatively, pyridine which is substituted by one, two or three C1–C3 alkyl groups or other onium salts can be used.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: June 6, 2006
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Uta Claassen
  • Patent number: 7037431
    Abstract: Acids can be removed from aprotic organic liquids by bringing the liquids into contact with polyalkyleneimines that have been applied to a support. Polyethyleneimine that has been applied to amorphous silicon dioxide is particularly suitable for this method. The method can be used, for example, to eliminate acidic components from fluorinated esters.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: May 2, 2006
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Olaf Boese, Katja Peterkord
  • Publication number: 20060036118
    Abstract: Catalysts such as antimony halides, which are useful in fluorination reactions involving hydrogen fluoride, may be reduced during the reaction and require regeneration. Regenerative oxidation is usually carried out by introducing elemental halogen, preferably fluorine or chlorine, into the reaction mixture. In accordance with the invention elemental halogen is prevented from coming into contact with starting materials or intermediate products which are reactive therewith. This is preferably achieved by withdrawing part of the reaction mixture from the reactor, mixing the withdrawn part with chlorine or fluorine in order to regenerate the catalyst, and thereafter returning the withdrawn part to the reactor.
    Type: Application
    Filed: October 27, 2005
    Publication date: February 16, 2006
    Applicant: SOLVAY FLUOR und DERIVATE GmbH
    Inventors: Max Braun, Carsten Brosch
  • Patent number: 6992213
    Abstract: Trifluoroethanol can be isolated from organic liquids that are contaminated by trifluoroethanol by bringing the contaminated liquid into contact with a molecular sieve having a pore size ranging between 0.5 and 1.0 nm, e.g., with molecular sieve 13X. This enables, for example, trifluoroacetic acid trifluoroethyl esters, bis(trifluoroethyl)carbonate or trifluoroethyl esters of phosphoric, phosphonic or phosphinic acid to be purified.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: January 31, 2006
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Olaf Boese, Katja Peterkord
  • Publication number: 20050267290
    Abstract: A method and apparatus suitable, inter alia, for producing carboxylic acid amides from carboxylic acid esters and amines in which a mixture of amide and alcohol is obtained, the mixture is maintained in a liquid state, and the alcohol which is released is progressively evaporated, after which the liquid carboxylic acid freed from alcohol contamination is discharged from the reactor, divided into small portions, and the small portions are converted by cooling into solid particles. The method and apparatus can also be used to prepare peptides and other solid organic compounds, generally.
    Type: Application
    Filed: September 20, 2004
    Publication date: December 1, 2005
    Applicant: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Kerstin Eichholz
  • Publication number: 20050183573
    Abstract: A method for separating gaseous mixtures from underground cables or gas-insulated circuits in which the gaseous mixtures, which contain partially fluorinated and/or perfluorinated hydrocarbons and inert gases, are brought into contact with hydrophobic zeolites in at least one adsorption step so that the fluorinated hydrocarbons are adsorbed.
    Type: Application
    Filed: January 25, 2005
    Publication date: August 25, 2005
    Applicant: Solvay Fluor und Derivate GmbH
    Inventors: Heinz-Joachim Belt, Michael Pitroff, Thomas Schwarze
  • Patent number: 6921545
    Abstract: Sulfuryl fluoride and ovicidal gases have been found to exert a synergistic action on insect eggs, so it is possible to fumigate under sublethal conditions relative to the ovicide, and the dose of ovicidal gas can be reduced e.g. to sublethal concentrations.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: July 26, 2005
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Klaus Baeumert, Heinz-Joachim Belt
  • Publication number: 20050106689
    Abstract: 3-aminocrotonate compounds, e.g. diesters, which are substituted on the C-4 atom by at least two chlorine and/or fluorine atoms, are produced by reacting corresponding acetoacetate compounds with ammonia and primary and secondary amines while simultaneously or subsequently eliminating water. The reaction is carried out in the presence of onium salts formed from primary or secondary amines and carboxylic acids. Preferably, two phases are formed; one phase containing the crotonate compound product with a good degree of purity and the other phase containing the onium salt and water.
    Type: Application
    Filed: September 20, 2004
    Publication date: May 19, 2005
    Applicant: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Saskia Braukmueller
  • Patent number: 6880746
    Abstract: Fluxing agents comprising potassium fluorostannate and/or cesium fluorostannate which can be used for brazing or soldering components of aluminum or of an aluminum alloy, even by solderless brazing or soldering. Conventional fluxing agents or other fluorometallates, such as alkali metal fluorozincates and/or alkali metal fluorosilicates, can also be added to the fluorostannate-containing fluxing agent. The fluxing agents of the invention can be applied by either dry or wet fluxing methods.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: April 19, 2005
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Ulrich Seseke-Koyro, Andreas Becker, Joachim Frehse
  • Publication number: 20050070716
    Abstract: A method of producing a halogen alkenone ether by attaching carboxylic acid halogenides or carboxylic acid anhydrides to a vinyl ether. According to the invention the method is carried out in the presence of an onium salt of a carbonic acid which can be regenerated. The resulting product is obtained in high yields. Alternatively, pyridine which is substituted by one, two or three C1-C3 alkyl groups or other onium salts can be used.
    Type: Application
    Filed: August 6, 2004
    Publication date: March 31, 2005
    Applicant: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Uta Claassen
  • Publication number: 20050054741
    Abstract: Blowing-agent mixtures containing HFC-365mfc, HFC-227ea and one or both of 1,1,1,3,3-pentafluoropropane and 1,1,1,2-tetrafluoroethane are disclosed; as well as non-combustible polyether polyol and/or polyester polyol premixes for producing foamed products, in particular polyurethane foams.
    Type: Application
    Filed: July 29, 2004
    Publication date: March 10, 2005
    Applicant: Solvay Fluor und Derivate GmbH
    Inventors: Lothar Zipfel, Karsten Boerner, Dierk-Ingolf Recke
  • Patent number: 6861451
    Abstract: Carboxylic acid fluorides having a boiling point of preferably less than 100° C. are suitable for use as pesticides. Acetyl fluoride is highly suitable, and Chlorodifluoroacetyl fluoride and trifluoroacetyl fluoride are also very useful. Mixtures of carboxylic acid fluoride pesticides and other pesticides are also disclosed.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 1, 2005
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Francine Janssens, Reiner Fischer
  • Publication number: 20050022664
    Abstract: Sulfuryl fluoride, which is useful as a fumigant, may be contaminated with sulfur dioxide and possibly other impurities such as sulfuryl chloride, depending on the way it is produced. According to the invention, sulfur dioxide and, if applicable, sulfuryl chloride fluoride are removed from a contaminated sulfuryl fluoride product by using aluminum oxide as an adsorbing agent. The method of the invention is highly advantageous because it eliminates the need to use activated carbon as an additional adsorbent.
    Type: Application
    Filed: August 6, 2004
    Publication date: February 3, 2005
    Applicant: Solvay Fluor und Derivate GmbH
    Inventors: Johannes Eicher, Matthias Markek, Lore Hirsch
  • Publication number: 20050027147
    Abstract: Catalysts such as antimony halides, which are useful in fluorination reactions involving hydrogen fluoride, may be reduced during the reaction and require regeneration. Regenerative oxidation is usually carried out by introducing elemental halogen, preferably fluorine or chlorine, into the reaction mixture. In accordance with the invention elemental halogen is prevented from coming into contact with starting materials or intermediate products which are reactive therewith. This is preferably achieved by withdrawing part of the reaction mixture from the reactor, mixing the withdrawn part with chlorine or fluorine in order to regenerate the catalyst, and thereafter returning the withdrawn part to the reactor.
    Type: Application
    Filed: June 18, 2004
    Publication date: February 3, 2005
    Applicant: Solvay Fluor und Derivate GmbH
    Inventors: Max Braun, Carsten Brosch